What distinguishes the Dirty Martini from its non-dirty counterpart?

The Dirty Martini is primarily distinguished by the addition of olive juice, which gives the cocktail a salty and briny flavor that sets it apart from a classic Martini. The traditional Martini typically consists of gin or vodka and dry vermouth, and its crisp and clean profile is altered by the olive juice in a Dirty Martini. This ingredient not only changes the taste of the drink but also adds a hint of complexity, appealing to those who enjoy a savory cocktail experience.

The other choices do not define the Dirty Martini. The use of flavored vodka can apply to various cocktails and is not a defining characteristic of this particular drink. Sweet vermouth is associated with drinks like the Manhattan and is not part of a classic or Dirty Martini. Lastly, while garnishes can vary, the essential difference lies in the incorporation of olive juice, not the garnish itself. Thus, the addition of olive juice is what clearly delineates the Dirty Martini from its non-dirty version.